HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| bac7913a RM |
1 | /* Emulate getpagesize on systems that lack it. */ |
| 2 | ||
| 3 | #ifndef HAVE_GETPAGESIZE | |
| 4 | ||
| 5 | #ifdef VMS | |
| 6 | #define getpagesize() 512 | |
| 7 | #endif | |
| 8 | ||
| 9 | #ifdef HAVE_UNISTD_H | |
| 10 | #include <unistd.h> | |
| 11 | #endif | |
| 12 | ||
| 13 | #ifdef _SC_PAGESIZE | |
| 14 | #define getpagesize() sysconf(_SC_PAGESIZE) | |
| 15 | #else | |
| 16 | ||
| 17 | #include <sys/param.h> | |
| 18 | ||
| 19 | #ifdef EXEC_PAGESIZE | |
| 20 | #define getpagesize() EXEC_PAGESIZE | |
| 21 | #else | |
| 22 | #ifdef NBPG | |
| 23 | #define getpagesize() NBPG * CLSIZE | |
| 24 | #ifndef CLSIZE | |
| 25 | #define CLSIZE 1 | |
| 26 | #endif /* no CLSIZE */ | |
| 27 | #else /* no NBPG */ | |
| 28 | #ifdef NBPC | |
| 29 | #define getpagesize() NBPC | |
| 1da3ef65 DM |
30 | #else /* no NBPC */ |
| 31 | #ifdef PAGESIZE | |
| 32 | #define getpagesize() PAGESIZE | |
| 33 | #endif | |
| bac7913a RM |
34 | #endif /* NBPC */ |
| 35 | #endif /* no NBPG */ | |
| 36 | #endif /* no EXEC_PAGESIZE */ | |
| 37 | #endif /* no _SC_PAGESIZE */ | |
| 38 | ||
| 39 | #endif /* not HAVE_GETPAGESIZE */ |